let n be a positive integer, and let f(n) represent the number of different prime factions of na)find 1)f(1)謝謝大家幫忙
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let n be a positive integer, and let f(n) represent the number of different prime factions of na)find 1)f(1)設n是正整數,f(n)表示n 的不同質因數的個數,1)求f(1)。